About this role
Salary: £40,000 - 70,000 per year
Requirements: We are looking for a Data Engineer with strong Apache Cassandra experience.We would like someone with experience in keyspace design, replication strategies, partitioning models, and data modelling aligned to query patterns.We need practical knowledge of performance tuning, including compaction strategies, consistency levels, read/write path optimisation, and JVM/GC tuning.We are looking for experience managing Cassandra cluster operations, including node additions/decommissions, repairs, backups, and disaster recovery.We would like experience using monitoring tools such as Prometheus, Grafana, OpsCenter, or equivalent.We need familiarity with CQL query development and best-practice access patterns.We would value experience working with infrastructure and security teams on hardening, encryption, and authentication/authorisation (RBAC). Responsibilities: We will need you to design, implement, and maintain Apache Cassandra clusters.We will need you to develop and optimise data models aligned to query patterns, including denormalisation, partition key design, avoiding hotspots, and wide partitions.We will need you to perform performance tuning across compaction strategies, consistency levels, read/write paths, and JVM/GC settings.We will need you to manage cluster operations such as node additions/decommissions, repairs, backups, and disaster recovery.We will need you to monitor cluster health using tools such as Prometheus, Grafana, OpsCenter, or equivalent.We will need you to support CQL query development and advise application teams on best-practice access patterns.We will need you to collaborate with infrastructure and security teams on hardening, encryption at rest and in transit, and authentication/authorisation.We will need you to produce technical documentation, including data models, runbooks, and operational procedures. Technologies: CassandraGrafanaSupportJVMPrometheusRESTRBACSecurityNodeJS More:
We are supporting one of our investment banking clients in hiring a Data Engineer for an initial 6-month contract with scope for extension. The role is based in London with 2-3 days per week in the office, and the rate is up to £700 per day inside IR35.
last updated 33 week of 2026